I used a thin wood screw that would engage the pin (pin is much harder so no damage to it) and rotated as I pulled out gently on it. Use WD 40 or similar penetrating solvent to loosen deposits on the pin. This is not a easy engine to take apart
but it can be done. Jaka has very good advice, just remember to spread the heat around to prevent warping or a melted case..........good luck!

Bruce